VOL. I, cloth, boards, price Ts. 64, can be had of the Publishers, Messrs KENT & Co. 



Paternoster Row. 



No. XIX— Vol. II. FEBBUABY, 1862. Price 6d. 



THE 



TECHNOLOGIST. 



A MONTHLY RECORD OF 



Science Elites to &rt atffl i&amtfacture. 



EDITED BY 



P. L. SIMMONDS, F.S.S., 



Author of " Tlie Commercial Products of the Vegetable Kingdom? "A 

 Dictionary of Trade Products" " Tlie Curiosities of Food? <&c. 



CONTENTS. 



PAGE 



The Starch-Producing Plants op Ceylon. By W. C. On- 

 daatje, Colonial Assistant-Surgeon 193 



On a New Process of Photography without Silver. By Dr 

 T. L. Phipson 197 



The Sapucaya Nuts of Commerce. By John Lindley, M.D., 

 F.R.S. (With an Illustration.) 199 



Papier-Mache Manufacture. By "W. K. Sullivan 202 



Marmalade 204 



Application ok Aluminium to Practical Purposes 206 



Turpentine and Rosin. By the Editor 209 



Fossil Hydro-Carbons, the Source of Light, Heat, Colour, &c. 

 By Thomas D. Rock 215 



LONDON : 

 KENT & CO., PATEBNOSTEE BOW. 



